Results 31 to 40 of about 20,702 (201)

Mechanisms Affecting the Biosynthesis and Incorporation Rate of Selenocysteine

open access: yesMolecules, 2021
Selenocysteine (Sec) is the 21st non-standard proteinogenic amino acid. Due to the particularity of the codon encoding Sec, the selenoprotein synthesis needs to be completed by unique mechanisms in specific biological systems.
Jing-Jing Peng   +4 more
doaj   +1 more source

Novel sulfur and selenium containing bis-α-amino acids from 4-hydroxyproline [PDF]

open access: yes, 2010
The synthesis of new substituted prolines carrying at C-4 a second α-amino acid residue is reported. The amino acid, l-cysteine or l-selenocysteine, is linked to the proline ring through the sulfur or the selenium atom, respectively.
CAPUTO, ROMUALDO   +4 more
core   +1 more source

Selenocysteine: the 21st amino acid [PDF]

open access: yesMolecular Microbiology, 1991
SummaryGreat excitement was elicited in the field of selenium biochemistry in 1986 by the parallel discoveries that the genes encoding the selenoproteins glutathione peroxidase and bacterial formate dehydrogenase each contain an in‐frame TGA codon within their coding sequence.
A, Böck   +6 more
openaire   +2 more sources

Selenium in biology: Facts and medical perspectives [PDF]

open access: yes, 2000
Several decades after the discovery of setenium as an essential trace element in vertebrates approximately 20 eukaryotic and more than 15 prokaryotic selenoproteins containing the 21(st) proteinogenic amino acid, selenocysteine, have been identified ...
Brigelius-Flohé, Regina   +5 more
core   +1 more source

The single-nucleotide polymorphism (GPX4c718t) in the glutathione peroxidase 4 gene influences endothelial cell function : Interaction with selenium and fatty acids [PDF]

open access: yes, 2013
© 2013 The Authors. Molecular Nutrition & Food Research published by Wiley-VCH Verlag GmbH & Co.
Akbaraly   +31 more
core   +2 more sources

Probing the Structure of [NiFeSe] Hydrogenase with QM/MM Computations [PDF]

open access: yes, 2020
The geometry and vibrational behavior of selenocysteine [NiFeSe] hydrogenase isolated from Desulfovibrio vulgaris Hildenborough have been investigated using a hybrid quantum mechanical (QM)/ molecular mechanical (MM) approach. Structural models have been
Elghobashi-Meinhardt, Nadia Said   +3 more
core   +1 more source

Dual incorporation of non-canonical amino acids enables production of post-translationally modified selenoproteins

open access: yesFrontiers in Molecular Biosciences, 2023
Post-translational modifications (PTMs) can occur on almost all amino acids in eukaryotes as a key mechanism for regulating protein function. The ability to study the role of these modifications in various biological processes requires techniques to ...
Pearl Morosky   +8 more
doaj   +1 more source

Selenocysteine modulates resistance to environmental stress and confers anti-aging effects in C. elegans

open access: yesClinics
OBJECTIVE: The free radical theory of aging suggests that cellular oxidative damage caused by free radicals is a leading cause of aging. In the present study, we examined the effects of a well-known anti-oxidant amino acid derivative, selenocysteine, in ...
Jun-Sung Kim   +2 more
doaj   +1 more source

Probing pattern and dynamics of disulfide bridges using synthesis and NMR of an ion channel blocker peptide toxin with multiple diselenide bonds [PDF]

open access: yes, 2016
Anuroctoxin (AnTx), a 35-amino-acid scorpion toxin containing four disulfide bridges, is a high affinity blocker of the voltage-gated potassium channel Kv1.3, but also blocks Kv1.2.
Bartok, Adam   +9 more
core   +2 more sources

Tamoxifen-like metallocifens target thioredoxin system determining mitochondrial impairment leading to apoptosis in Jurkat cells [PDF]

open access: yes, 2017
Tamoxifen-like metallocifens (TLMs) of the group-8 metals (Fe, Ru, and Os) show strong anti-proliferative activity on cancer cell lines resistant to apoptosis, owing to their unique redox properties. In contrast, the thioredoxin system, which is involved
Alberto Bindoli   +9 more
core   +3 more sources

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